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Thomas Armstrong — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Liberty-County, Montana
Our Model Tree links this Thomas Armstrong across the 1920, 1930 and 1940 US Censuses in Liberty-County, Montana (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 4-person household.
Age 50
b. ~1890
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Liberty-County, Montana |
| Surname | Armstrong |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Liberty |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Farmer |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Montana |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Farmer |
| Township / Ward | Dist 59 |
| Est. Birth Year | ~1890 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Thomas Armstrong | Head | — | 50 | ~1890 |
| Alan Armstrong | Son | — | 14 | ~1926 |
| Etta Armstrong | Spouse | — | 56 | ~1884 |
| James Armstrong | Son | — | 20 | ~1920 |
Census Appearances
1920
Liberty, Montana
Head, age 30
Liberty, Montana · implied b. ~1890 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1910 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | Scotland |
| Year of Naturalization | 1918 |
| Birthplace (normalized) | scotland |
1930
Liberty, Montana
Head, age 40
Liberty, Montana · implied b. ~1890
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Armstrong |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1910 |
| Age at First Marriage | 25 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | E |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Radio Set | R |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Liberty-County, Montana
Head, age 50
Liberty-County, Montana · implied b. ~1890 — 4 household members
| Surname | Armstrong |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | Chester |
| 1935 Residence (County) | Liberty |
| Naturalization Status | Naturalized |
| Occupation | Farmer |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Montana |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Thomas Armstrong across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Thomas Armstrong
Head · 1940 · age 50 · b. ~1890 · Montana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Liberty-County, Montana
Open full size
1940 US Federal Census — Liberty-County, Montana
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02223-00098)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold Kinread | 40 | Head | Rancher | California |
| 2 | Emily Kinread | 70 | Mother | — | Nova Scotia |
| 3 | Theresa Lasseau | 36 | Servant | Maid | Ohio |
| 4 | James Mcdowell | 35 | Helper | Farm Laborer | Nebraska |
| 5 | Alice Brown | 37 | Sister | Teacher | California |
| 6 | James Brown | 8 | Nephew | — | Montana |
| 7 | David Brown | 6 | Nephew | — | Montana |
| 8 | Alice Brown | 3 | Niece | — | Montana |
| 9 | Patrick Llanes | 55 | Helper | Sheepherder | Chile |
| 10 | Thomas Armstrong THIS PERSON | 50 | Head | Farmer | Scotland |
| 11 | Etta Armstrong | 56 | Wife | — | Illinois |
| 12 | James Armstrong | 20 | Son | — | Montana |
| 13 | Alan Armstrong | 14 | Son | — | Montana |
| 14 | Joseph Broadhurst | 37 | Head | Farmer | Missouri |
| 15 | Myrtle Broadhurst | 33 | Wife | — | Minnesota |
| 16 | Gloramae Broadhurst | 10 | Daughter | — | Montana |
| 17 | Kenneth Broadhurst | 5 | Son | — | Montana |
| 18 | Alice Broadhurst | 4 | Daughter | — | Montana |
| 19 | Joseph Broadhurst | 84 | Father | — | Minnesota |
| 20 | Knute Berg | 64 | Head | Farmer | Minnesota |
| 21 | Christ Berg | 73 | Head | Farmer | Minnesota |
| 22 | Maria Berg | 67 | Sister | — | Minnesota |
| 23 | Pete Offerdall | 52 | Head | Farmer | Norway |
| 24 | Christina Offerdall | 46 | Wife | — | Norway |
| 25 | Olaf Offerdall | 20 | Son | — | Montana |
| 26 | Selmer Olson | 27 | Helper | Farm Hand | Montana |
| 27 | Palmar Lund | 22 | Helper | Farm Hand | Minnesota |
| 28 | Donald Timmel | 23 | Helper | Sheepherder | No. Dak. |
| 29 | Joseph Peters | 47 | Head | Farmer | Montana |
| 30 | Florence Peters | 35 | Wife | — | Ohio |
| 31 | Grace Peters | 18 | Daughter | — | Montana |
| 32 | Majorie Peters | 13 | Daughter | — | Montana |
| 33 | John Sharrard | 52 | Head | Farmer | Ireland |
| 34 | Maud Sharrard | 40 | Wife | — | Washington |
| 35 | John Sharrard | 17 | Son | — | Montana |
| 36 | Thomas Sharrard | 16 | Son | — | Montana |
| 37 | Jessie Sharrard | 10 | Daughter | — | Montana |
| 38 | James Sharrard | 3 | Son | — | Montana |
| 39 | William Mainard | 57 | Head | Farmer | Illinois |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)